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| author | Konrad Rzeszutek Wilk | 2016-01-25 22:33:20 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2016-02-09 14:50:16 +0100 |
| commit | fed0764fafd8e2e629a033c0f7df4106b0dcb7f0 (patch) | |
| tree | 11877084d79ccadb090b726cb280bb76e72ca4aa /kernel/futex.c | |
| parent | locking/lockdep: Eliminate lockdep_init() (diff) | |
| download | kernel-qcow2-linux-fed0764fafd8e2e629a033c0f7df4106b0dcb7f0.tar.gz kernel-qcow2-linux-fed0764fafd8e2e629a033c0f7df4106b0dcb7f0.tar.xz kernel-qcow2-linux-fed0764fafd8e2e629a033c0f7df4106b0dcb7f0.zip | |
locking/atomics: Update comment about READ_ONCE() and structures
The comment is out of data. Also point out the performance drawback
of the barrier();__builtin_memcpy(); barrier() followed by another
copy from stack (__u) to lvalue;
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1453757600-11441-1-git-send-email-konrad.wilk@oracle.com
[ Made it a bit more readable. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/futex.c')
0 files changed, 0 insertions, 0 deletions